Rather than the awkward, binary and proprietary native Excel format, you might want to consider producing ODF documents, e.g. with OpenOffice::OODoc. Recent versions of Microsoft Excel support the ODF format.

--
No matter how great and destructive your problems may seem now, remember, you've probably only seen the tip of them. [1]

When putting a smiley right before a closing parenthesis, do you:

Use two parentheses: (Like this: :) )
Use one parenthesis: (Like this: :)
Reverse direction of the smiley: (Like this: (: )
Use angle/square brackets instead of parentheses
Use C-style commenting to set the smiley off from the closing parenthesis
Make the smiley a dunce: (:>
I disapprove of emoticons
Other